{"product_id":"ph4500bl-bluelab-ph-4-0-calibration-solution-500ml","title":"PH4500BL  Bluelab pH 4.0 Calibration Solution 500ml","description":"\u003ch3 data-start=\"304\" data-end=\"326\"\u003e\u003cstrong data-start=\"308\" data-end=\"326\"\u003e Description\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"327\" data-end=\"701\"\u003eThe \u003cstrong data-start=\"331\" data-end=\"370\"\u003eBluelab pH 4.0 Calibration Solution\u003c\/strong\u003e is a \u003cstrong data-start=\"376\" data-end=\"395\"\u003ebuffer solution\u003c\/strong\u003e used to calibrate pH meters, pens, probes, and other pH measuring equipment. Calibration solutions are critical to ensure that your pH measurement tools give \u003cstrong data-start=\"554\" data-end=\"588\"\u003eaccurate and reliable readings\u003c\/strong\u003e — especially in applications like hydroponics, gardening, laboratory work, aquariums, and environmental testing.\u003c\/p\u003e\n\u003cul data-start=\"703\" data-end=\"1453\"\u003e\n\u003cli data-start=\"703\" data-end=\"1039\"\u003e\n\u003cp data-start=\"705\" data-end=\"1039\"\u003eDesigned to set the \u003cstrong data-start=\"725\" data-end=\"754\"\u003ereference point at pH 4.0\u003c\/strong\u003e, which is used as the \u003cstrong data-start=\"777\" data-end=\"808\"\u003eacidic calibration standard\u003c\/strong\u003e when performing two-point calibration of most pH meters. The meter is normally calibrated at \u003cstrong data-start=\"902\" data-end=\"918\"\u003epH 7.0 first\u003c\/strong\u003e (neutral) then at \u003cstrong data-start=\"937\" data-end=\"947\"\u003epH 4.0\u003c\/strong\u003e to accurately define the instrument response curve.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1040\" data-end=\"1252\"\u003e\n\u003cp data-start=\"1042\" data-end=\"1252\"\u003eMade to \u003cstrong data-start=\"1050\" data-end=\"1079\"\u003ehigh laboratory standards\u003c\/strong\u003e and typically referenced or traceable to recognized standard methods (e.g., NIST), ensuring accuracy and consistency in calibration.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1253\" data-end=\"1453\"\u003e\n\u003cp data-start=\"1255\" data-end=\"1453\"\u003eRegular calibration — especially before important measurement sessions or monthly — helps keep readings trustworthy and extends the useful life of the pH probe.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1253\" data-end=\"1453\"\u003e\n\u003ch3 data-start=\"2326\" data-end=\"2349\"\u003e\u003cstrong data-start=\"2330\" data-end=\"2349\"\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"2350\" data-end=\"2996\"\u003e\n\u003cli data-start=\"2350\" data-end=\"2523\"\u003e\n\u003cp data-start=\"2352\" data-end=\"2523\"\u003e\u003cstrong data-start=\"2352\" data-end=\"2394\"\u003eEssential for accurate pH measurement:\u003c\/strong\u003e Serves as a stable point to calibrate instruments so they read correctly at acidic pH.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2524\" data-end=\"2664\"\u003e\n\u003cp data-start=\"2526\" data-end=\"2664\"\u003e\u003cstrong data-start=\"2526\" data-end=\"2548\"\u003eLarge 500 ml size:\u003c\/strong\u003e Suitable for repeated calibration sessions without frequent repurchasing.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2665\" data-end=\"2831\"\u003e\n\u003cp data-start=\"2667\" data-end=\"2831\"\u003e\u003cstrong data-start=\"2667\" data-end=\"2699\"\u003eCompatible with most meters:\u003c\/strong\u003e Works with Bluelab units and other brand pH meters that accept liquid buffer calibration.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2832\" data-end=\"2996\"\u003e\n\u003cp data-start=\"2834\" data-end=\"2996\"\u003e\u003cstrong data-start=\"2834\" data-end=\"2873\"\u003eImproves longevity and performance:\u003c\/strong\u003e Regular calibration helps maintain probe performance and meter accuracy over time.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"2998\" data-end=\"3021\"\u003e\u003cstrong data-start=\"3002\" data-end=\"3021\"\u003e Tips for Use\u003c\/strong\u003e\u003c\/h3\u003e\n\u003col data-start=\"3022\" data-end=\"3586\"\u003e\n\u003cli data-start=\"3022\" data-end=\"3233\"\u003e\n\u003cp data-start=\"3025\" data-end=\"3233\"\u003e\u003cstrong data-start=\"3025\" data-end=\"3051\"\u003eTwo-Point Calibration:\u003c\/strong\u003e First calibrate your meter using pH 7.0 buffer, then use the pH 4.0 calibration solution to complete calibration for acidic range accuracy.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3234\" data-end=\"3437\"\u003e\n\u003cp data-start=\"3237\" data-end=\"3437\"\u003e\u003cstrong data-start=\"3237\" data-end=\"3261\"\u003eAvoid contamination:\u003c\/strong\u003e Pour a small amount of buffer into a clean container for calibration — do not dip the probe directly into the main bottle repeatedly.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3438\" data-end=\"3586\"\u003e\n\u003cp data-start=\"3441\" data-end=\"3586\"\u003e\u003cstrong data-start=\"3441\" data-end=\"3463\"\u003eDiscard after use: Do not reuse the buffer you’ve used for calibration as it may become contaminated. \u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BLUELAB","offers":[{"title":"Default Title","offer_id":46104562827437,"sku":"PH4500BL","price":1799.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/7666\/9357\/files\/500-ml.jpg?v=1781166661","url":"https:\/\/rinstrument.com\/products\/ph4500bl-bluelab-ph-4-0-calibration-solution-500ml","provider":"Rinstruments","version":"1.0","type":"link"}